CPC C01B 3/38 (2013.01) [B01J 8/0438 (2013.01); B01J 19/0013 (2013.01); B01J 19/2445 (2013.01); B01J 2219/00038 (2013.01); B01J 2219/00157 (2013.01); C01B 2203/0233 (2013.01); C01B 2203/0811 (2013.01); C01B 2203/1241 (2013.01)] | 16 Claims |
1. A method for operating a plurality of reactors, comprising:
reacting a first mixture comprising fuel and 0.1 vol % or more of O2 under first combustion conditions in a first combustion zone within a first reactor to form a first flue gas comprising a first temperature of 400° C. or more, and to heat one or more surfaces in a first reaction zone to a regenerated surface temperature of 800° C. or more, the first reaction zone comprising a catalyst composition;
passing at least a portion of the first flue gas into a second reactor;
reacting a second mixture comprising fuel, 0.1 vol % or more of O2, and the at least a portion of the first flue gas under second combustion conditions in a second combustion zone within the second reactor to form a second flue gas having a temperature between 200° C. and the first temperature, and to heat one or more surfaces in a second reaction zone; exposing a first reactant stream to the one or more surfaces in the first reaction zone to increase the temperature of the first reactant stream; and
exposing the first reactant stream to the catalyst composition in the first reaction zone at a temperature of 800° C. or more to form a first product stream, a direction of flow for the first reactant stream within the first reaction zone being reversed relative to a direction of flow for the first mixture,
wherein the first combustion conditions comprise a first pressure and the second combustion conditions comprise a second pressure, the first pressure being greater than the second pressure by 100 kPa or more.
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